package com.dhl.facade;

/**
 * @title: Projector
 * @Author danghailiang
 * @Date: 2022/8/10 8:05
 * @Version 1.0
 */
// 放映机
public class Projector {
    private static Projector instance = new Projector();

    private Projector(){}

    public static Projector getInstance(){
        return instance;
    }

    public void on(){
        System.out.println("打开放映机");
    }
    public void focus(){
        System.out.println("集中观看放映机");
    }
    public void off(){
        System.out.println("关闭放映机");
    }

    public void zoom(){
        System.out.println("放大放映机显示");
    }
}
